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120 is . the factorial of 5, i.e., ! =.; the fifteenth triangular number, [2] as well as the sum of the first eight triangular numbers, making it also a tetrahedral number. 120 is the smallest number to appear six times in Pascal's triangle (as all triangular and tetragonal numbers appear in it).
Earth Day is an annual event on April 22 to demonstrate support for environmental protection.First held on April 22, 1970, it now includes a wide range of events coordinated globally by EARTHDAY.ORG (formerly Earth Day Network) [1] including 1 billion people in more than 193 countries.
Since Earth's Birthday Project's founding in 1989, it is estimated that more than 15 million school children have participated in butterfly and sunflower activities, as well as rainforest and river conservation. In the late 1980s, as the twentieth anniversary of Earth Day approached, Cliff Ross was teaching middle school in New York City.
The long hundred, also known as the great hundred or twelfty, [1] is the number 120 (in base-10 Hindu-Arabic numerals) that was referred to as hund, hund-teontig, hundrað, hundrath, or hundred in Germanic languages prior to the 15th century, and is now known as one hundred and twenty, or six score.
120 may refer to: 120 (number), the number; AD 120, a year in the 2nd century AD; 120 BC, a year in the 2nd century BC; 120 film, a film format for still photography; 120, a 2008 film; 120 (MBTA bus), a Massachusettes Bay Transport Authority bus route; 120 (New Jersey bus), a New Jersey Transit bus route; 120 (Kent) Construction Regiment, Royal ...
A list of articles about numbers (not about numerals). Topics include powers of ten, notable integers, prime and cardinal numbers, and the myriad system.